<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div v-if="cartInfoList.length!=0">
       <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul
          class="cart-list"
          v-for="(cart, index) in cartInfoList"
          :key="cart.id"
        >
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="cart.isChecked == 1"
              @change="updateChecked(cart, $event)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="cart.defaultImg" />
            <div class="item-msg">{{ cart.title }}</div>
          </li>
          
          <li class="cart-list-con4">
            <span class="price">{{ cart.price }}.00</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:void(0)"
              class="mins"
              @click="downNum(cart)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              minnum="1"
              class="itxt"
              v-model="cart.skuNum"
              @change="onHand(cart,$event)"
            />
            <a
              href="javascript:void(0)"
              class="plus"
              @click="upNum(cart)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ cart.skuNum * cart.price }}</span>
          </li>
          <li class="cart-list-con7">
            <a class="sindelet" @click="deleteCartById(cart)">删除</a>
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input
          class="chooseAll"
          type="checkbox"
          ref="allSelect"
          :checked="isAllCheck&&cartInfoList.length>0"
          @change="updateAllCartChecked"
        />
        <span>全选</span>
      </div>
      <div class="option">
        <a @click="deleteAllCheckedCart" class="del">删除选中的商品</a>
        <a href="#none">移到我的收藏</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>{{selectId.length}}</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ totalPrice }}</i>
        </div>
    <div class="mask" v-if="isShow" @click="onShow">
       <div class="sumbtn" @click="toPay()">
          <router-link class="sum-btn" :to="1">结算</router-link>
        </div>
    </div>
       
      </div>
    </div>
    </div>
    <div class="kong" v-else>
      <img src="./images/kong.png" alt="">
    </div>
  </div>
</template>
<script>
import { mapGetters } from "vuex";
import throttle from "lodash/throttle";
export default {
  name: "ShopCart",
  data() {
    return {
      cartInfoList:[],
      selectId:[],
      isShow:true
    }
  },
  mounted() {
    this.getData();
    console.log(this.shopCart.shopCart);
    // this.cartInfoList.push(this.skuInfo)
    console.log(this.cartInfoList);
  },
  methods: {
    onShow(){
     
    },
    //获取个人购物车数据
    getData() {
      this.cartInfoList=JSON.parse(sessionStorage.getItem("Cart"));
    },
    onHand(cart,event){
      //用户输入进来的文本 * 1
      let value = event.target.value * 1;
      //如果用户输入进来的非法,出现NaN或者小于1
      if (isNaN(value) || value < 1) {
        cart.skuNum = 1;
      } else {
        //正常大于1【大于1整数不能出现小数】
        cart.skuNum = parseInt(value);
      }
    },
   downNum(cart){
    //  this.cartInfoList.splice(0,1)
      console.log(this.cartInfoList);
     if (cart.skuNum>1) {
       cart.skuNum--
       sessionStorage.setItem("Cart",JSON.stringify(this.cartInfoList));
           this.getData()
     }
   },
   upNum(cart){
     
     cart.skuNum++
      // this.$store.dispatch("find");
      // this.shopCart.push(123)
      // console.log(this.cartInfoList);
      sessionStorage.setItem("Cart",JSON.stringify(this.cartInfoList));
           this.getData()
    //  console.log(this.$store.state.shopcart.cartFrom);
   },
    //删除某一个产品的操作
    deleteCartById(cart) {
      
      this.cartInfoList.forEach((item,index)=>{
       if (item.id==cart.id) {
         this.$confirm('删除该商品?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
        this.cartInfoList.splice(index,1)
        sessionStorage.setItem("Cart",JSON.stringify(this.cartInfoList));
        this.getData()
          this.$message({
            type: 'success',
            message: '删除成功!'
          });
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '取消删除'
          });          
        });
       }
      })
     
    },
    //修改某个产品的勾选状态
    updateChecked(cart, event) {
      if (event.target.checked) {
      this.selectId.push(cart.id)
        
      }else{
       let i= this.selectId.indexOf(cart.id)
       this.selectId.splice(i,1)
      }
      // console.log(event.target.checked);
      console.log(this.selectId);
    },
  
    deleteAllCheckedCart() {
      
      for (let i = 0; i < this.selectId.length; i++) {
        this.cartInfoList.forEach((item,index) => {
          if (item.id==this.selectId[i]) {
          this.cartInfoList.splice(index,1)
          }
          sessionStorage.setItem("Cart",JSON.stringify(this.cartInfoList));
           this.getData()
        });
      }
    },
    //修改全部产品的选中状态
    updateAllCartChecked(event) {
            this.selectId=[]
        this.cartInfoList.map((item,index)=>{
          if (event.target.checked) {
            this.selectId.push(item.id)
         console.log(this.selectId);
          }
          else{
            this.selectId=[]
          }
        })
        console.log( this.selectId);
    },
    toPay(){
      if (this.selectId.length==0) {
        alert('请选择购物车物品！')
      }else{
      this.isShow=false
      }
      if (this.isShow) {
        return
      }
        let payList=[]
      for (let i = 0; i < this.selectId.length; i++) {
        this.cartInfoList.map((item,index) => {
          if (item.id==this.selectId[i]) {
          payList.push(this.cartInfoList[index])
          }
        });
      }
      console.log(payList,'支付数据');
      sessionStorage.setItem("payList",JSON.stringify(payList));
      this.$router.push({
        path:'/trade',
        query:{
          allPrice:this.totalPrice
        }
      })
    }
  },
  computed: {
    // ...mapGetters(["cartList"]),
    //购物车数据
    
     skuInfo() {
      return JSON.parse(sessionStorage.getItem("skuInfo"));
    },
    //计算购买产品的总价
    totalPrice() {
      let sum = 0;
      for (let i = 0; i < this.selectId.length; i++) {
         this.cartInfoList.forEach((item) => {
           if (item.id==this.selectId[i]) {
          sum += item.skuNum * item.price;
           }
      });
      }
      return sum;
    },
    //判断底部复选框是否勾选【全部产品都选中，采勾选】
    isAllCheck() {
      //遍历数组里面原理，只要全部元素isChecked属性都为1===>真 true
      //只要有一个不是1======>假false
      return this.cartInfoList.every((item) => item.isChecked == 1);
    },
  },
  watch:{
    skuInfo:{
      handler(val){
        console.log(123);
      }
    }
  }
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;
  .kong{
    img{
      width: 100%;
    }
  }
.mask{
      width: 95px;
      height: 54px;
      // opacity: 0;
      // position: absolute;
        float: right;
      // background-color: #c81623;
      // top: 60vh;
      // right:10vw;
      z-index: 99;
    }
  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 17%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;
          .sindelet{
            cursor: pointer;
          }
           .sindelet:hover{
            color: red;
          }
          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;
      cursor: pointer;
      .del:hover{
        color: red;
      }
      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #ee5533;
          overflow: hidden;
        }
      }
    }
    
  }
}
</style>
